Design a class name ShowRoom with the following description:

Instance variables / Data members:
String name — To store the name of the customer
long mobno — To store the mobile number of the customer
double cost — To store the cost of the items purchased
double dis — To store the discount amount
double amount — To store the amount to be paid after discount

Member methods:
ShowRoom() — default constructor to initialize data members
void input() — To input customer name, mobile number, cost
void calculate() — To calculate discount on the cost of purchased items, based on following criteria

Cost	Discount (in percentage)
Less than or equal to ₹10000	5%
More than ₹10000 and less than or equal to ₹20000	10%
More than ₹20000 and less than or equal to ₹35000	15%
More than ₹35000	20%

void display() — To display customer name, mobile number, amount to be paid after discount.

Write a main method to create an object of the class and call the above member methods.

import java.util.Scanner;

public class ShowRoom
{
    private String name;
    private long mobno;
    private double cost;
    private double dis;
    private double amount;

    public ShowRoom()
    {
        name = "";
        mobno = 0;
        cost = 0.0;
        dis = 0.0;
        amount = 0.0;
    }

    public void input() {
        Scanner in = new Scanner(System.in);
        System.out.print("Enter customer name: ");
        name = in.nextLine();
        System.out.print("Enter customer mobile no: ");
        mobno = in.nextLong();
        System.out.print("Enter cost: ");
        cost = in.nextDouble();
    }
    
    public void calculate() {
        int disPercent = 0;
        if (cost <= 10000)
            disPercent = 5;
        else if (cost <= 20000)
            disPercent = 10;
        else if (cost <= 35000)
            disPercent = 15;
        else
            disPercent = 20;
        
        dis = cost * disPercent / 100.0;
        amount = cost - dis;
    }
    
    public void display() {
        System.out.println("Customer Name: " + name);
        System.out.println("Mobile Number: " + mobno);
        System.out.println("Amout after discount: " + amount);
    }
    
    public static void main(String args[]) {
        ShowRoom obj = new ShowRoom();
        obj.input();
        obj.calculate();
        obj.display();
    }
}